Winding and dumping ratchet



March 25 .1924. 38,151

J. F. HAGEMAN WINDVING AVND DUMPING RATCHET Filed Feb. 20, 1922 2 Sheets-Sheet 1 March 25,1924; 1,4883% -.J. F. HAGEMAN WINDING AND DUMPING RATCHET Filed Fe b. go, 1922 2 Sheets-Shea} 2 gwuewtop alitozvwq Patented Mar. 25, 1924.

train JOHN F. HAGEMAN, OF ANYOX, BRITISH COLUMBIA, CANADA.

WINDING AND DUMPING- RATGHET.

Application filed February 20, 1922.

To all whomz't may concern:

Be it known that I, JOHN F. HAGEMAN, a citizen of the United States, residing at Anyox, in the Province of British Columbia and Dominion of Canada, have invented certain new and useful Improvements in Winding and Dumping Ratchets, of which the following is a specification.

This invention has relation to certain new and useful improvements in a winding and dumping ratchet for freight cars and the like and has for its primary object, the provision of a ratchet of the character stated which will be of such construction and oporation that it cannot be jarred out of position by the travel of the car over the track and therefore will serve to securely hold the the dumping members of the car in closed position during transportation of the loaded car.

The invention has for another object the provision of a winding and dumping ratchet of the character stated which will be of extremely simple construction and operation and which can be readily applied to freight cars and the like in place of the former ratchet employed in the winding and dumping mechanism thereof without alterations of the car structure.

a The invention has for a further object the provision of a winding and dumping ratchet of the character set forth in which the parts will be of simple and inexpensive construction and arrangement and mounted so that the cam member resting upon the ratchet member will serve to securely lock the latter in its operative position and prevent the same from being jarred out of place during transportation of the car.

With the foregoing and other objects in view as will appear as the descriptionproceeds, the invention consists in the novel construction, combination and arrangement of co-operating elements as hereinafter more specifically set forth, claimed and shown in the accompanying drawings forming a part of the present application and in which Figure 1 shows an elevation of the new form of ratchet applied, a section of the car to which this is especially adapted being shown in this view.

Figure 2 is an enlargedelevation of the ratchet, the car being broken away for the sake of clearness.

Serial No. 538,047.

Figure 3 is a detail transverse section on the plane of line 3-3 of Fig. 2, looking in the direction indicated by the arrows.

Figure 4 is a detail vertical section on the plane of line 44 of Fig. 2, looking in the direction indicated by the arrows.

Referring more in detail to the drawings in which similar reference characters designate corresponding parts throughout the several views, 1 indicates a reinforcing and supporting plate which is bolted or otherwise secured to the outer face of the car body A, as shown at 2. This may be a plate corresponding to the supporting member re quired for previously employed winding and dumping ratchets, as will be understood by parties familiar with such devices. The winding and dumping shaft 3 extends through the side of the car A and through the plate 1 and has a square outer portion 4, as is usual in such structures, whereby the ratchet wheel may be mounted thereon for rotation with the shaft 3, a stop collar 6 being mounted 011 the square outer portion 4 of the shaft 3, outwardly of the ratchet wheel 5 and a locking member 7 such as the cotter pin shown in the drawings, the pin being extended through the shaft squared portion 4, outwardly of the stop collar 6 to prevent outward movement of the washer 'or collar 6 and the ratchet wheel 5, as may be readily understood by referring to Figs. 3 and 4.,

A second supporting plate 8 is secured to the outer face of the body of the car A and has an outwardly offset portion 9, as shown clearly in Fig. 3. This figure also shows clearly that the ratchet wheel 5 has a reduced and rounded outer portion which may be termed a collar portion 10, extended through the outwardly offset portion 9 of the plate 8, inwardly of the stop collar or washer 6, whereby the plate 8 will serve to assist in supporting the outer squared part 4 of the shaft 3 and the members mounted thereon, without interfering with the operation thereof.

A pivot bolt 11 is extended through the side of the car body A, through the reinforcing plate 1 and through the reduced free end of the outwardly offset portion 9 of the plate 8, as shown clearly in Fig. 3. A suitable washer 12 and locking pin 13 are carried on the outer extremity of the pivot boltset portion 9 of the plate 8.

11 to securely lock the latter in position. This pivot bolt 11 serves to support the pawl 14 which is loosely mounted thereon, between the plate 1 and the outwardly off- This pawl 14 is curved as shown in Fig. 2 and provided with an angularly out working end 15 for engagement with the teeth of the ratchet wheel 5, as shown also in Fig. 2, so as to securely retain the ratchet wheel 5 and the shaft 3 from rotation in one direction. By curving the pawl 14 as shown, the workingend 15 engages the teeth of the ratchet wheel 5 in a plane above the pivot point of the pawl 14 and also above the shaft 3. This form of pawl 14 will also provide a slightly inclined cam receiving face 16 on its upper edge, at a point above the ratchet wheel 5 and between the shaft 3 and the pivot bolt 11 of the pawl. The curved working face 17 of the cam locking member 18 rests upon theface 16 of the pawl 14, as shown in Fig. 2 to securely lock the pawl 14 in operative position. This cam 18 is of segmental form and freely mounted on the cam supporting member 19 at its upper end, and at a point to one side of the point at which the working face 17 contacts with the face 16 of the pawl 14. The locking cam 18 is of such construction that it has a tendency to ride downwardly on the face 16 of the pawl 14 in an effort to contact with the same at a point below the pivot member 19 of the locking cam 18. This is prevented, however, by the relative proportions of the various members of the mechanism and the mounting thereof. Therefore, this results in the locking cam 18 constantly exerting adownward pressure upon the pawl 14 to securely lock the same in engagement wit-h the teeth of the ratchet wheel 5; Any tendency of the pawl 14 to move away from the ratchet wheel 5 will instantly result in a tightening of the locking cam 18 upon the pawl 14. It will therefore be evident that the jolting and jarring of the parts duringtransportation of the cars over a rough track will serve to tighten the pawl 14 in its looking or operative position instead of loosening and disengaging the pawl and thereby permitting dumping of the car and the loss of the contents as well as possible injury to the car and the dumping mechanism. thereof.

It is to be understood that in applying this device to a car, the complete mechanism shown should be duplicated and one set of the mechanism reversed, thereby providing a left and a right cam lock and winding and dumping ratchet. It will be seen that while this mechanism will prevent positively the unintentional rotation of the shaft 3 in one direction, this shaft may be readily rotated as desired in the reverse direction. When it is desired to release the shaft 8 for rotation without interference of the pawl 14,

of what isclaimed without departing from the spirit of the invention.

What I claim is 1. A winding and dumping ratchet fora car comprising the combination with supporting plates mounted on the side of the car and having spaced portions, a winding and dumping shaft extended through said car side and having its squared portion extended through the outer supporting plate, a ratchet mounted on said squared portion of theshaft between said plates, a pawl supporting member extended through said plate, a pawl mounted on-saidpawl supporting member and having a curved body por tion providedwith an inclined upperface,

said pawl terminating in an inclined work-.

ing end for engagement with the ratchet wheel and a locking cam pivoted on said car above said pawland between the shaft and the pawl supporting member, said locking cam having a weighted and curved lower workingedge adapted for gradual locking engagement with the inclined upper face-of the pawl at a point offset from and ,up-

wardly on the inclined face of the pawl from the pivot point of said locking cam, whereby a movement of the working end of the pawl from the teeth of the ratchet wheel will cause a tighter locking of the locking cam on said pawl to securely lock the pawl in operative position.

2. A winding and dumping ratchet for a car comprising the combination with supporting means secured to the side of said car, said supporting means including an inner plate and an .outer plate the latter secured at one end and having its free end offset and extending substantially parallel to the inner plate, said outer plate being provided with an enlarged opening, of a winding and dumping shaft extending through.

said car side and having its squared portion extending through said enlarged opening in said outer plate, a ratchet wheel mounted on said squared portion of said shaft between said plates, a collar on the ratchet wheel and adapted to be received in said; enlarged open ing, a pawl pivotally supported between said plates adjacent the outer ends thereof, said pawl having a curvedjbody portion provided with an inclined upper face, said pawl terminating in an inclined working end for engagement with the ratchet wheel, and a locking cam pivoted on the inner supporting plate above said pawl and between said winding shaft and said pawl, said locking cam having a weighted and curved lower working face adapted for gradual locking engagement with the inclined upper face of 10 the pawl at a point ofiset from and upcause a tighter locking of the locking cam 15 on said pawl to securely lock the pawl in an operative position.

In testimony whereof I affix my signature.

JOHN F. HAGEMAN 

